A low dose of a long ester test works the best for a bridge between cycles... But it doesn't sound like you got the experience to run a bridge though... Unless your terminology is off do you mean front load...

How many normal cycles have you run? And how well did you react to them? Have you assessed a risk to benefit for cycling yearlong? Did you run short or long cycles before hand?

Just to make sure you know what you're getting into... Your body is not going to naturally produce testosterone when bridging... you need to dose your HCG during a bridge to chemically manipulate your gonads to function but you will not achieve a functioning HPTA.... Do you know what your doing? Cause not to sound like a hippo, I've been on all year and this is my first higher than normal dose period...
but you should at least know what kind of guinea pig shit your about to get into... I still haven't found a cool doctor.... one of the risks to accept...